Criminal Minds Swimmer's Calculus (Season 18, Episode 1)
TV Episode | Crime, Drama, Mystery

Criminal Minds

Swimmer's Calculus (Season 18, Episode 1)

TV Episode | Crime, Drama, Mystery

When bodies wash up on the Maryland shoreline, the BAU races to find the UnSub; after surviving a prison attack, Elias Voit has been placed in a medically induced coma while Rossi is investigated for the incident.

Showrunner

Erica Messer

Director

Bethany Rooney

Writers

Jeff Davis (created by) | Breen Frazier (written by) | Chikodili Agwuna (story editor) | Jayne Archer (story editor) & 3 more

Composers

Tyler Bates | Joanne Higginbottom

Cinematographer

Anthony Vietro

Editors

Casey Brown | David Dworetzky | Amanda Panella

Casting Directors

Erica S. Bream | April Webster

Production Designer

Kitty Doris-Bates

See all filmmakers & crew (64)

Edit Released

Updated May 8, 2025

Release date

May 8, 2025 (United States)

Awards

Series awards

Nominated for 3 Primetime Emmy Awards. Another 24 wins & 32 nominations

Contacts

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Cast	+ Add Cast
25 cast members

Name	Known for
Joe Mantegna David Rossi David Rossi See fewer	The Godfather Part III (1990)
A.J. Cook Jennifer Jareau Jennifer Jareau See fewer	Criminal Minds (2005)
Kirsten Vangsness Penelope Garcia Penelope Garcia See fewer	Criminal Minds (2005)
Aisha Tyler Dr. Tara Lewis Dr. Tara Lewis See fewer	Archer (2009)
Zach Gilford Elias Voit Elias Voit See fewer	The Purge: Anarchy (2014)
Ryan-James Hatanaka Tyler Green (as RJ Hatanaka) Tyler Green (as RJ Hatanaka) See fewer	Criminal Minds (2005)
Adam Rodriguez Luke Alvez Luke Alvez See fewer	CSI: Miami (2002)
Paget Brewster Emily Prentiss Emily Prentiss See fewer	Criminal Minds (2005)
Nicole Pacent Rebecca Wilson Rebecca Wilson See fewer	Westworld (2016)
Jade Harlow Kristi Estes Kristi Estes See fewer	Cowboy Bebop (2021)
Tate Moore Vivian Estes Vivian Estes See fewer	The Last Thing He Told Me (2023)
Eddie Mills Curtis Estes Curtis Estes See fewer	Dancer, Texas Pop. 81 (1998)
Gilli Messer Agent Beatriz Carr Agent Beatriz Carr See fewer	Jessie (2011)
Cortés Alexander Travis Townsend Travis Townsend See fewer	Criminal Minds (2005)
Eric Scott Alperin Work Friend Work Friend See fewer	Criminal Minds (2005)
Austin Archer David Hartle David Hartle See fewer	Horizon: An American Saga - Chapter 1 (2024)
Bourke Floyd Sheriff Brody Sheriff Brody See fewer	Criminal Minds (2005)
Ariel Jackson Nurse Monica Luna Nurse Monica Luna See fewer	9-1-1 (2018)
Clayton Royal Johnson Tom Tom See fewer	Stranger Things (2016)
Dennis Mencia Richard Downey Richard Downey See fewer	Griselda (2024)
Sam O'Byrne Franklin Fowler (Unsub) Franklin Fowler (Unsub) See fewer	Criminal Minds (2005)
Tyler Ham Pong EMT Harris EMT Harris See fewer	Leap (II) (2016)
Josh Server Delaware State Trooper Chakoian Delaware State Trooper Chakoian See fewer	Good Burger 2 (2023)
Daisy Wang Chrissie Chrissie See fewer	Criminal Minds (2005)
Adriana Fricke Tactical SWAT Officer (uncredited) Tactical SWAT Officer (uncredited) See fewer	Symbol (2009)